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<h1>back</h1>
<a name="com.stripe.android.model.PersonTokenParams.Document$back"></a>
<code><span class="keyword">val </span><span class="identifier">back</span><span class="symbol">: </span><a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html"><span class="identifier">String</span></a><span class="symbol">?</span></code>
<p>The back of an ID returned by a
<a href="https://stripe.com/docs/api/tokens/create_person#create_file">file upload</a> with a
<code>purpose</code> value of <code>identity_document</code>. The uploaded file needs to be a color image
(smaller than 8,000px by 8,000px), in JPG or PNG format, and less than 10 MB in size.</p>
<p><a href="https://stripe.com/docs/api/tokens/create_person#create_person_token-person-verification-document-back">person.verification.document.back</a></p>
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